which conducts espionage against the south. this month south korean officials said the north appears ready to launch the musudan, a mid-range ballistic missile and several short-range missiles. defense analysts are trying to understand where all of this is headed. akimoto has been tracking the situation for the defense of securities studies, a british think tank. >> north korean commanders are organizing their troops. they want to respond by the u.s. and the south korean forces. with such tensions, north korean soldiers can't afford to be taking part in mental parlay. thus said, there is little possibility of renewed fighting between the two koreas. u.s. and south korean commanders staged their exercise to train their troops in joint operations and to put on a show of strength. the leaders in pyongyang are simply responding to that. these are psychological tactics.